checkmate (version 2.3.3)

checkFileExists: Check existence and access rights of files

Description

Check existence and access rights of files

Usage

checkFileExists(x, access = "", extension = NULL)
check_file_exists(x, access = "", extension = NULL)
assertFileExists(
  x,
  access = "",
  extension = NULL,
  .var.name = vname(x),
  add = NULL
)
assert_file_exists(
  x,
  access = "",
  extension = NULL,
  .var.name = vname(x),
  add = NULL
)
testFileExists(x, access = "", extension = NULL)
test_file_exists(x, access = "", extension = NULL)
expect_file_exists(
  x,
  access = "",
  extension = NULL,
  info = NULL,
  label = vname(x)
)
checkFile(x, access = "", extension = NULL)
assertFile(x, access = "", extension = NULL, .var.name = vname(x), add = NULL)
assert_file(x, access = "", extension = NULL, .var.name = vname(x), add = NULL)
testFile(x, access = "", extension = NULL)
expect_file(x, access = "", extension = NULL, info = NULL, label = vname(x))

Value

Depending on the function prefix: If the check is successful, the functions

assertFileExists/assert_file_exists return

x invisibly, whereas

checkFileExists/check_file_exists and

testFileExists/test_file_exists return

TRUE. If the check is not successful,

assertFileExists/assert_file_exists

throws an error message,

testFileExists/test_file_exists

returns FALSE, and checkFileExists/check_file_exists

return a string with the error message. The function expect_file_exists always returns an

expectation.

Arguments

x

[any]
Object to check.

access

[character(1)]
Single string containing possible characters ‘r’, ‘w’ and ‘x’ to force a check for read, write or execute access rights, respectively. Write and executable rights are not checked on Windows.

extension

[character]
Vector of allowed file extensions, matched case insensitive.

.var.name

[character(1)]
Name of the checked object to print in assertions. Defaults to the heuristic implemented in vname.

add

[AssertCollection]
Collection to store assertion messages. See AssertCollection.

info

[character(1)]
Extra information to be included in the message for the testthat reporter. See expect_that.

label

[character(1)]
Name of the checked object to print in messages. Defaults to the heuristic implemented in vname.

See Also

Other filesystem: checkAccess(), checkDirectoryExists(), checkPathForOutput()

Examples

# Check if R's COPYING file is readable
testFileExists(file.path(R.home(), "COPYING"), access = "r")

# Check if R's COPYING file is readable and writable
testFileExists(file.path(R.home(), "COPYING"), access = "rw")